(19)
(11) EP 1 041 272 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.09.2002 Bulletin 2002/38

(43) Date of publication A2:
04.10.2000 Bulletin 2000/40

(21) Application number: 00302769.5

(22) Date of filing: 31.03.2000
(51) International Patent Classification (IPC)7: F02M 47/02, F02M 45/08, F02M 61/08, F02M 45/12
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 01.04.1999 GB 9907565
04.03.2000 GB 0005165

(71) Applicant: Delphi Technologies, Inc.
Troy, MI 48007 (US)

(72) Inventor:
  • Lambert, Malcolm David Dick
    Bromley, Kent BR2 9LN (GB)

(74) Representative: Pople, Joanne Selina 
Marks & Clerk, Alpha Tower, Suffolk Street, Queensway
Birmingham B1 1TT
Birmingham B1 1TT (GB)

   


(54) Fuel injector


(57) A fuel injector comprising a valve needle (10) slidable within a first bore (11), a surface associated with the valve needle (10) being exposed to the fuel pressure within a first control chamber (20) and movement of the valve needle (10) away from the valve needle seating being limited by a moveable stop member (19). The stop member (19) has a surface exposed to fuel pressure within a second control chamber (23). The fuel injector also includes a control valve arrangement (29, 35) for controlling the fuel pressure within the first and second control chambers (20, 23) to control movement of the valve needle (10) and the stop member (19). The invention also relates to a fuel injector in which the control valve arrangement is arranged to permit the rate of valve needle movement away from the valve needle seating to be varied, in use.






Search report